[A feel-good power fantasy, pure wish fulfillment with no thinking required. No ship-bashing, don't split up the main couple, and don't vilify the transmigrated woman.]
Jiang Yuge is a once-in-a-millennium daughter of fortune. She can find secret manuals just by going out, and handsome men seem to drop into her lap at home. The world is so jealous it grinds its teeth, but the beautiful Jiang couldn't care less. A life this invincible is just too boring!
Wait, it's a little boring, sure, but why does someone keep coming along to cause trouble?
What? A transmigrated woman wants to steal my fortune? I'll just bring her over to our side.
Huh? Young lord of the demon race, how about joining me in a rebellion?
Hmm? Alliance leader of the immortals? I think it's time I took that position.
Hold on, no one told me my master was actually my senior brother! So what are my senior brothers supposed to call me now?